So less than a gallon of juice and 4 cans of concentrate in a 5 gallon batch?
In my concentrate wines I use 4 cans of concentrate per gallon. If adding sugar like you did then you can go with 2 cans of concentrate per gallon or go 100% juice with no water.
The apple flavor will not get stronger. Probably need more juice concentrate there to kick up the flavor. Let it ferment out. Once you rack a few times and let it clear. Stabilize with Camden and sorbate and back sweeten with concentrate to taste.
A painting says a thousand words. But a painting while on good mead just looks funny!